EP 0473323 A1 19920304 - Circuit for processing image signals read out of pick-up apparatus having solid state image sensing devices.
Title (en)
Circuit for processing image signals read out of pick-up apparatus having solid state image sensing devices.
Title (de)
Schaltung zur Verarbeitung des Bildausgangssignals eines Bildaufnahmegerätes mit mehreren Festkörperbildabtasteinrichtungen.
Title (fr)
Circuit pour le traitement de signal de sortie d'image d'un appareil de prise de vues comportant plusieurs capteurs d'image du type à l'état solide.
Publication
Application
Priority
- JP 10645291 A 19910412
- JP 22424990 A 19900828
Abstract (en)
A circuit for processing red, green and blue color signals read out of red, green and blue solid state image sensing devices, light receiving elements of the green solid state image sensing device are spatially shifted with respect to those of the red and blue solid state image sensing devices in a horizontal scanning direction by a half of a pitch of the arrangement of the light receiving elements, including red, green and blue channels, each having a correlation double sampling circuit, in which a color signal is sampled at feed-through portion and signal portion thereof to derive two sample values and a difference between these sample values is derived as an output color signal. When the green color signal is sampled and held in the green channel, the sampling operation in the red and blue channels is inhibited by neutralizing sample values in these channels, and when the red and blue color signals are sampled and held in the red and blue channels, respectively, the sampling operation in the green channel is inhibited by neutralizing sample values. The frequency response of a brightness signal obtained by mixing the thus processed red, green and blue color signals does not become zero even if an object to be picked-up has a spatial frequency which is equal to the sampling frequency. <IMAGE>
IPC 1-7
IPC 8 full level
H04N 1/028 (2006.01); H04N 1/19 (2006.01); H04N 23/13 (2023.01); H04N 25/00 (2023.01); H04N 25/48 (2023.01)
CPC (source: EP US)
H04N 23/13 (2023.01 - EP US); H04N 25/616 (2023.01 - EP US); H04N 25/75 (2023.01 - EP US)
Citation (search report)
- [A] US 4220977 A 19800902 - YAMANAKA SEISUKE [JP]
- [A] EP 0135300 A2 19850327 - VICTOR COMPANY OF JAPAN [JP]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0473323 A1 19920304; EP 0473323 B1 19960424; DE 69118998 D1 19960530; DE 69118998 T2 19961024; JP 2919110 B2 19990712; JP H04229761 A 19920819; US 5229848 A 19930720
DOCDB simple family (application)
EP 91307430 A 19910813; DE 69118998 T 19910813; JP 10645291 A 19910412; US 74449191 A 19910813